Atopy is a predisposition toward developing certain allergic hypersensitivity reactions. Atopy may have a hereditary component, although contact with the allergen or irritant must occur before the hypersensitivity reaction can develop.
As of 2012, 63.9 percent of players playing in Major League Baseball are white. There is no way of telling the exact number due to the number of players.
MLB has long supported a ban of smokeless tobacco at the Major League level, and we support the efforts of cities to ban the use of all tobacco products, including smokeless tobacco, in sports stadiums and arenas, said MLB spokesman Mike Teevan. Related: Ty Cobb Tobacco baseball cards worth millions found.